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Daewoo 20V1NTS, Руководство по обслуживанию

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Daewoo 20V1NTS Скачать руководство пользователя страница 44

18

Pin Symbol

Description 

1

V

i(pos)

input voltage (positive)

2

V

i(neg) 

input voltage (negative) 

3

V

p

supply voltage

4

V

OB

output voltage B

5

GND

ground 

6

V

flb

flyback supply voltage 

7

V

OA

output voltage A

8 V

O(guard)

guard output voltage

9 V

M

input measuring resistor

IC DESCRIPTION                                                              

APPENDIX 

Pinning

Содержание 20V1NTS

Страница 1: ...hyperband Tuning system Ferquency synthesiser tuning system 14 34cm Visual screen size 20 48cm 21 51cm Channel indication On screen display Program selection 100 Programmes RCA jack Audio input and Vi...

Страница 2: ...e mode 5 2 Microcontroller configuration 5 3 TV SET Alignment 5 6 SCHEMATIC DIAGRAM 7 EXPLODED VIEW 8 10 PRINTED CIRCUIT BOARD 11 SERVICE PARTS LIST 12 23 The different parts list 24 FUNCTIONAL DESCRI...

Страница 3: ...lass fragments will be violently expelled 2 If any Fuse in this TV receiver is blown replace it with the FUSE specified in the Replacement Parts List 3 When replacing a high wattage resistor oxide met...

Страница 4: ...npedance 75 8 Slow Switching TV 0 to 2V AV 4 5 to 12V Impedance 10k 9 Green Earth 10 N C 11 Green Input 0 7Vpp 0 1V Impedance 75 12 N C 13 Red Earth 14 Blanking Earth 15 Red Input 0 7Vpp 0 1V Impedanc...

Страница 5: ...4 CIRCUIT BLOCK DIAGRAM...

Страница 6: ...nfiguration Tuner Option TV set Alignment 1 G2 alignment Set TV in NORMAL I mode TV in AV mode without video signal Black screen TV preset with WP Red WP Green and WP Blue equal to 32 TV preset with B...

Страница 7: ...Slope to compensate for vertical distortion 5 Horizontal picture centering Adjust H Shift to have the picture in the center of the screen 7 AGC Adjust the antenna signal level to 68dB V 2 for Daewoo t...

Страница 8: ...7...

Страница 9: ...8 1 14V3 EXPLODED VIEW...

Страница 10: ...9 2 20V3 EXPLODED VIEW...

Страница 11: ...10 3 21V3 EXPLODED VIEW...

Страница 12: ...11...

Страница 13: ...NG 30X190 BK M211A 7172401412 SCREW TAPPTITE TT2 TRS 4X14 MFZN BK M211D 7172401412 SCREW TAPPTITE TT2 TRS 4X14 MFZN BK M492 4854939403 BUTTON POWER ABS BK M591 4855930900 DECO TERM PVC CL T0 2 SP01A 7...

Страница 14: ...APPTITE TT2 RND 3X12 MFZN 0000C 4853938501 BRKT TR SBHG1 A T1 5 I802 1LTV817C IC PHOTO COUPLER LTV 817C I803 1DP123 IC ERROR AMP DP123 I805 1KA7805 IC REGULATOR KA7805 I901 PTC3SW1100 HEAT SINK ASS Y...

Страница 15: ...2TM18006BE TAPE MASKING 6 2X500 E001 4856310300 EYE LET BSR T0 2 R1 6 E002 4856310300 EYE LET BSR T0 2 R1 6 E003 4856310300 EYE LET BSR T0 2 R1 6 E004 4856310300 EYE LET BSR T0 2 R1 6 E005 4856310300...

Страница 16: ...2 3 DY PIN P601 485923162S CONN WAFER YW025 03 STICK R303 RS02Z129JS R M OXIDE FILM 2W 1 2 OHM J SMALL R402 RS01Z279J R M OXIDE FILM 1W 2 7 OHM J TAPPING R415 RS02Z102JS R M OXIDE FILM 2W 1K OHM J SMA...

Страница 17: ...O 25V RSS 100MF 6 3X11 TP C601 CEXF1H108V C ELECTRO 50V RSS 0 1MF 5X11 TP C603 CEXF1C101V C ELECTRO 16V RSS 100MF 6 3X11 TP C650 CEXF1E470V C ELECTRO 25V RSS 47MF 5X11 TP C770 CEXF1H100V C ELECTRO 50V...

Страница 18: ...3M 232 MAP C 6 2X2000M A001 4859805293 PCB MAIN 246X246 S1B C350 CCZF1H473Z C CERA 50V F 0 047MF Z C351 CCZB1H222K C CERA 50V B 2200PF K AXIAL C421 CCZF1H103Z C CERA 50V F 0 01MF Z C506 CBZF1H104Z C C...

Страница 19: ...DIODE 1N4937G TAPPING D408 D1N4937G DIODE 1N4937G TAPPING D450 D1N4937G DIODE 1N4937G TAPPING D520 D1N4148 DIODE 1N4148 TAPPING D521 D1N4148 DIODE 1N4148 TAPPING D531 D1N4148 DIODE 1N4148 TAPPING D532...

Страница 20: ...WIRE COPPER AWG22 1 0 65 TIN COATING J021 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J022 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J024 85801065GY WIRE COPPER AWG22 1 0 65 TIN COATING J026...

Страница 21: ...CPZ100K04 COIL PEAKING 10UH 10 5MM K LAL04TB L500 5CPZ829K02 COIL PEAKING 8 2UH K AXIAL 3 5MM L501 5CPZ100K02 COIL PEAKING 10UH K AXIAL 3 5MM L502 5CPZ100K02 COIL PEAKING 10UH K AXIAL 3 5MM L510 5CPZ1...

Страница 22: ...M J R520 RD AZ183J R CARBON FILM 1 6 18K OHM J R521 RD AZ391J R CARBON FILM 1 6 390 OHM J R522 RD AZ221J R CARBON FILM 1 6 220 OHM J R523 RD AZ331J R CARBON FILM 1 6 330 OHM J R524 RD AZ561J R CARBON...

Страница 23: ...R722 RD AZ221J R CARBON FILM 1 6 220 OHM J R723 RD AZ331J R CARBON FILM 1 6 330 OHM J R724 RD AZ471J R CARBON FILM 1 6 470 OHM J R803 RD 4Z185J R CARBON FILM 1 4 1 8M OHM J R804 RD 4Z185J R CARBON FI...

Страница 24: ...ARBON FILM 1 6 100 OHM J RA03 RD AZ101J R CARBON FILM 1 6 100 OHM J RA04 RD AZ101J R CARBON FILM 1 6 100 OHM J RA06 RD AZ750J R CARBON FILM 1 6 75 OHM J RA07 RD AZ390J R CARBON FILM 1 6 39 OHM J RA08...

Страница 25: ...AWG22 1 0 65 AWG22 1 0 65 NONE R350 R METAL FILM 1 4W 1K OHM 1 4 1 2K OHM 1 4W 1 2K OHM 1 4W 1 5K OHM R351 R METAL FILM 1 4W 1K OHM 1 4 1 2K OHM 1 4W 1 2K OHM 1 4W 1 5K OHM R556 R METAL FILM 1 6W 7 5...

Страница 26: ...DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC E mail djkoo web dwe co kr TEL 82 2 360 7806 FAX 82 2 360 7877...

Страница 27: ...and AGC circuit The nominal frequency of the demodulator is tuned to the required frequency 5 5 6 0 6 5 MHz by means of a calibration circuit which uses the clock frequency of the microcontroller as a...

Страница 28: ...n signals with a high chroma to burst ratio are received The ACL circuit is designed such that it only reduces the chroma signal and not the burst signal This has the advantage that the colour sensiti...

Страница 29: ...tomatic adjustment of the Vg2d voltage during the production of the TV receiver During switch off of the TV receiver a fixed beam current is generated by the black current control circuit This current...

Страница 30: ...I2C bus The video processor pin 28 has multiple functions and provides in this applicationbus Deemphasis time constant Audio monitor output External AM input Deemphasis time constant The time constant...

Страница 31: ...king and sourcing is active which leads to steep slopes The levels are 0 and Vddp the supply voltage 3 3Volts High impedance This mode can be used for input only operation of the port Special port for...

Страница 32: ...via resistors R350 and R351 The differential input voltage is compared with the output current through the deflection coils measured as voltage across R302 which provides internal feed back informati...

Страница 33: ...RGB control circuit with Continuous Cathode Calibration white point and black level off set adjustment so that the colour temperature of the dark and the bright parts of the screen can be chosen indep...

Страница 34: ...olour palette Globally selectable scan lines per row 9 10 13 16 and character matrix 12x10 12xl3 12x16 VxH Fringing Shadow selectable from N S E W direction Fringe colour selectable Meshing of defined...

Страница 35: ...time capture and decoding for WST Teletext in Hardware to enable optimised microprocessor throughput 10 pages stored On Chip lnventory of transmitted Teletext pages stored in the Transmitted Page Tab...

Страница 36: ...10 IC DESCRIPTION APPENDIX...

Страница 37: ...ocal key input High impedance S SW 8 ADC 3 Scart Slow switching input VssC P 9 digital ground for controller core and peripheral LED 1 10 port 0 5 8mA current sinking capability LED 2 11 port 0 6 8mA...

Страница 38: ...V processor CVBS Y 42 external CVBS Y input CHROMA 43 chrominance input SVHS AUDOUT 44 audio out INSSW2 45 2nd RGB insertion input R2IN 46 2nd R input G2IN 47 2nd G input B2IN 48 2nd B input BCLIN 49...

Страница 39: ...13 IC DESCRIPTION APPENDIX TDA 9361 OR TDA9381...

Страница 40: ...tion Low turn on off pop Stand by mode Decription The device TDA7267A is a new technology Mono Audio Amplifier in Power DIP package specifically designed for TV application Thanks to the fully complem...

Страница 41: ...Board Square heat Sink vs Copper Area Example of heatsink using PC board copper Symbol Parameter Value unit Vs Operating Supply Voltage 18 V Io Output Put Peak Current 1 5 A Top Operating Temperature...

Страница 42: ...CHARACTERISTICS Tamb 25 C Vs 14 5V RL 8 f 1KHz nuless otherwise specified APPLICATION HINTS For 14 5V supply and 8 speaker application its maximum power dissipation is about 1 8W Assumming that max a...

Страница 43: ...ircuit the deflection coils can be DC coupled The IC is constructed in a Low Voltage DMOS process that combines Bipolar CMOS and DMOS devices MOS transistors are used in the output stage because of th...

Страница 44: ...ge positive 2 Vi neg input voltage negative 3 Vp supply voltage 4 VOB output voltage B 5 GND ground 6 Vflb flyback supply voltage 7 VOA output voltage A 8 VO guard guard output voltage 9 VM input meas...

Страница 45: ...or an output signal of 60 Vpp High slew rate of 900V s No external components requireds Very simple application Single supply voltage of 200V Internal reference voltage of 2 5 V Fixed gain of 50 Black...

Страница 46: ...a bus and serial clock The memory carries a built in 4 bit unique device type identifier code 1010 in accordance with the I2C bus definition Serial Clock SCL The SCL input is used to strobe all data i...

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